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TCI trikonli tosh uchlari IADC537 6 3/4″ (171 mm)
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API tugmachali bit IADC537 6.5 dyuym (165 mm) chegirmali narxda
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TCI toshli uchi IADC537 7 1/2” (190 mm)
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API zavod trikonli bit IADC537 7 5/8” (193.7 mm)
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TCI trikonli bit IADC537 7 7/8 dyuym (200 mm)
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Volfram karbidli qo'shimcha uchi IADC537 8 1/2″(215.9mm)
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API tugmachali tosh burg'ulash uchi IADC537 8 3/4″(222.2 mm) chegirmali narxda
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Qattiq tog' jinslari uchun IADC537 9 1/2″(241 mm) TCI burg'ulash uchi
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API qoyatosh quduqlarini burg'ilash uchun uchlari IADC537 10 5/8 dyuym (269 mm)
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Qattiq quduq uchun API uch konusli bit IADC537 11 5/8″(295 mm)
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Aylanuvchi uch konusli bit IADC537 12 1/4″(311mm)
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Metall muhrlangan Uzoq Sharq qoyatosh burg'ulash uchi IADC537 13 5/8″(346 mm)